US3754613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tilt hood assist spring
Assignee: Paccar Inc
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Filing: 1971-10-28
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Granted: 1973-08-28
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Expires: 1991-10-28
Abstract
Abstract A spring mounted to assist in the movement of a tilt hood for a motor vehicle. The spring is attached to a vertical, relatively fixed element at a point vertically spaced above the pivot point of the tilt hood and applies a constant upward force on the tilt hood. The spring thus lifts the weight off the pivot pin and further is located such that it will assist in movement of the hood from both the fully closed and the fully open position.
Inventors
- 👤 D Stephens
- 👤 R Penzotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:09
CPC Classifications
B; B62; B62D; B62D25/00; B62D25/08; B62D25/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A combination of a tilt hood and assist spring for a truck including a supporting framework comprising: an engine covering hood pivotally mounted at its front lower portion to a relatively fixed portion of the truck framework, means adapted to be covered by said hood extending rigidly upwardly from the framework to a position substantially above the lowest portion of said hood when in either its open or its closed position, spring means attached to the hood and to the upstanding means, the point of attachment at the hood in the closed position being below the point of attachment to the upstading means and rearward of the pivotal mounting such that the spring means is under continual tension, serving as a counterbalance for the weight of the hood during movement of the hood from one position to another and further removing stress upon the pivot mounting.
Claim 2
Dependent Claim
146 words
A combination of a tilt hood and assist spring for a truck including a supporting framework comprising: an engine covering hood pivotally mounted at its front lower portion to a relatively fixed portion of the truck framework, means adapted to be covered by said hood extending rigidly upwardly from the framework to a position substantially above the lowest portion of said hood when in either its open or its closed position, spring means attached to the hood and to the upstanding means, the point of attachment at the hood in the closed position being below the point of attachment to the upstading means and rearward of the pivotal mounting such that the spring means is under continual tension, serving as a counterbalance for the weight of the hood during movement of the hood from one position to another and further removing stress upon the pivot mounting.
Claim 3
Dependent Claim
15 words
The combination of claim 1 wherein the upwardly extending member is the truck radiator. upstanding
Claim 4
Dependent Claim
40 words
The combination of claim 1 and further including a cable member independent of said spring means, having its ends attached in close proximity to the ends of the spring means and limiting the amount of extension of the spring means.
Claim 5
Dependent Claim
17 words
The combination of claim 1 wherein there is a spring means on each side of the hood.
Claim 6
Dependent Claim
34 words
A combination of claim 1 wherein the hood comprises a unit which covers the engine and wheels forming a fender wall and the attachment to.he hood is at the interior of the fender wall.
Claim 7
Dependent Claim
39 words
The combination of claim 3 wherein the spring means and cable member are located such that they move from an approximately parallel relative position when the hood is closed to a non-interfering crossed position when the hood is open.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |